If a written claim shall be made for any Tax, for which Lessee is obligated pursuant to Section 10(a), and (x) under applicable law of the taxing jurisdiction Lessee is allowed to directly contest such Tax and, (y) no unindemnified taxes are involved that cannot reasonably be severed from the claim with respect to such Tax, then Lessee shall be permitted, at its expense and in its own name, to contest the imposition of such Tax and (provided that it shall impose no risk of loss, seizure, confiscation or detainment of the Aircraft, the Airframe, the Engine or any part of Lien upon title thereto) to withhold payment during the pending of such contest, if permitted by law. If allowable under local law and permission is granted to Lessee by Indemnitee, which permission shall not be unreasonably withheld, Lessee will be permitted to litigate any Tax claim for which it is obligated to indemnify any Indemnitee provided satisfactory arrangements are concluded